Suction cleaning attachment for player-pianos.



M. ROTHFELD. SUCTION CLEANING ATTACHMENT FOR PLAYER PTANOS.

APPLICATION FILED AUG-25, 1915- 1,221,221. Patented Apr. 3,1917.

5:4 .1- I A A a v'? xam Ema/whom Max ZEaXWeZd UNITED STATES PATENT OFFICE.

MAX ROTI-IFELD, OF PHILADELPHIA, PENNSYLVANIA.

SUCTION CLEANING ATTACHMENT FOR PLAYER-PIANOS.

Application filed August 25, 1915.

To all whom it may concern.

Be it known that T, Max Ro'rrirnno, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented certain new and useful Improvements in Suction Cleaning Attachments for Player-Pianos, of which the following is a specification.

My invention relates to improvements in suction cleaning attachments for player pianos, the object of the invention being to provide an attachment which can be connected to the air pipe of a player piano, and can be manipulated over the tracker bar to suck out dust in the bar and other parts of the playing mechanism.

A further object is to provide an attachment of the character stated which can be manufactured and sold at an extremely low price, which is adapted for use in any ordinary type of player piano, and which will most effectually clean out the piano when used.

With these and other objects in view, the invention consists in certain novel features of construction and combinations and arrangements of parts as will be more fully hereinafter described and pointed out in the claims.

In the accompanying drawings:

Figure 1 is a view in front elevation somewhat diagrammatic illustrating my improved attachment in connection with an ordinary type of player piano.

Fig. 2 is an enlarged broken view in longi tudinal section through the several parts of the attachment, and

Fig. 3 is an end elevation of the nozzle.

1 represents a player piano having the ordinary tracker bar 2, air motor 8, air bellows 4 with pedals 5 for operating the bellows. 6 is the ordinary air pipe which is of relatively large flexible tubing and which is removably connected to a nipple 7 on the air motor 3.

I have not attempted to illustrate any particular construction of player piano, as my improved attachment is adapted for use in connection with any ordinary mechanism of the kind, and hence in Fig. 1 the parts referred to 'are more or less diagrammatically illustrated, and no attempt is made to illustrate any details.

My improved cleaner attachment comprises a flexible hose 8 having a coupling nipple 9 at one end, and cleaning nozzle 10 Specification of Letters Patent.

Patented Apr. 3, 1917.

Serial No. 47,289.

at its other end. The coupling nipple 9 is adapted to be inserted in the end of the air pipe 6 when the latter is removed from the nipple 7 on the air motor 3, and this can be readil accomplished by simply drawing the air pipe off the nipple 7, and inserting the coupling nipple 9 in the end of the air pipe as shown in Fig. 1.

The nozzle l0comprises two members 11 and 12, both having air ducts 13 and 14 respectively therein. Member 12 is provided with a circular flange 15, and member 11 is provided with a circular flange 16, the latter of substantially the same internal diameter as the external diameter of flange 15, and is adapted to fit over the flange 15 and clamp the edges of a filtering sheet 17 between them.

The flange 16 is relatively long so that the flanges above referred to operate to form a chamber between the members 11 and 12 with the filtering sheet 17 stretched taut across said chamber, and operating to filter the air which is sucked through the ducts 13 and 14, and this filtering material can be removed and replaced whenever desired.

The extreme end of the nozzle 10 is curved or concaved to conform in shape to the shape of the tracker bar, and is preferably covered with flexible material 18 to prevent scratching the tracker bar.

The extreme end of the duct 13 flares outwardly into a relatively large mouth as shown at 19, so that as the nozzle is moved along the tracker bar, a relatively wide mouth is provided to take in several perforations on the tracker bar.

As is well known in the art, the bellows 1 operates to exert a suction through the air pipe 6, and when my improved attachment is connected to the air pipe as above explained, a suction will be had through the nozzle 10, and when the latter is moved along the face of the tracker bar 2, all dust in the tracker bar and in cooperating parts of the mechanism will be sucked out and will be stopped by the filtering material 17, and not pass to the bellows.

It will therefore be noted that with-my improved attachment the tracker bar and other parts of the machine may be readily cleaned from time to time without affecting the mechanism of the piano or calling for skilled labor.

Various slight changes might be made in the general form and arrangement of parts described without departing from my invention, and hence I do not limit myself to the precise details set forth, but consider myself at liberty to make such changes and alterations as fairly fall within the spirit and scope of the appended claims.

Having thus described my invention, What I claim as new and desire to secure by Letters Patent is:

1. A vacuum cleaning nozzle made in two telescoping sections, each of said sections having an air duct extending therethrough, the telescoping portions of said sections uniting to form a dirt-collecting chamber which communicates with said ducts, one of said sections having a surface designed for enga ement with the material to be cleaned and intersecting the duct therein, substantially as described.

2. A vacuum cleaning nozzle made in two telescoping sections, each of said sections having an air duct extending therethrough, the telescoping portions of said sections uniting to form a dirt-collecting chamber which communicates with said ducts, one of said sections having a concave surface which intersects the duct therein, the other of said sections having a duct-outlet portion for the attachment of a hose, substantially as described.

3. A vacuum cleaning nozzle made in two sections, one of said sections having an annular flange telescoping with an annular flange on the other of said sections, one of said flanges being longer than the other flange and abutting the opposite section to provide a. dirt collecting chamber between the sections, a duct extending through each of said sections and communicating with said chamber, and a filtering member between said sections and positioned within said chamber, a surface on one of said sec tions for engagement with the material to be cleaned and intersecting the duct therein, the other of said sections having a duct-outlet portion for the attachment of a hose, substantially as described.

l. A vacuum cleaning nozzle made in two telescoping sections, each of said sections having an air duct extending therethrough, the telescoping portions of said sections uniting to form a dirt-collecting chamber which communicates with said ducts, and a filtering sheet stretched across said chamber transversely to said ducts, one of said sec tions having a surface designed for engagement with the material to be cleaned and intersecting the duct therein, substantially as described.

In testimony whereof I have signed my name to this specification in the presence of two subscribing witnesses.

MAX ROTHFELD.

WVitnesses:

L. P. Month, S. W. FOSTER.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of latenta Washington, I). C. 

